ATL: MARCO - Remnants - Discussion

[tolakram]

Will Marco make landfall?

[Steve]

Looks like it but there really isn’t that much land down there anymore. They never redrew the maps but there are a couple of strips of land that have roads on them. Once you get up to Venice there is wider strips of dry land. I should have held up the glass but this is an inner band. With any luck we will get a few more. It’s overhead and slightly breezy and drizzling. It’s something.

[Hurricane Mike]

The heaviest impacts seem to be rain and flooding in the Florida Panhandle

[xironman]

This storm is just about pathetic. Expect a downgrade to TD pretty soon when the LLC makes landfall and the rest of the convection blows on into Mobile/Pensacola.

People were saying it was less than a TD 24 hrs ago. For fun I am looking for it to dive south as Laura starts to influence things.

[wx98]

This storm is just about pathetic. Expect a downgrade to TD pretty soon when the LLC makes landfall and the rest of the convection blows on into Mobile/Pensacola.

People were saying it was less than a TD 24 hrs ago. For fun I am looking for it to dive south as Laura starts to influence things.

Yeah, recon has confirmed otherwise until here lately. They didn’t find much last time out to confirm it still is at this point however. If Marco pokes around and Laura catches up it might get swallowed like Wilma swallowed Alpha in 2005.

[MarioProtVI]

Will Marco make landfall?

https://imgur.com/vQUuPmr

Yes, but barely:



000
WTNT64 KNHC 242301
TCUAT4

Tropical Storm Marco Tropical Cyclone Update
NWS National Hurricane Center Miami FL AL142020
600 PM CDT Mon Aug 24 2020

...MARCO MAKES LANDFALL NEAR THE MOUTH OF THE MISSISSIPPI...
...EXPECTED TO BECOME A TROPICAL DEPRESSION LATER TONIGHT...

Visible satellite imagery and surface observations indicate that
Marco made landfall near the mouth of the Mississippi River around
600 PM CDT. Data from an Air Force Reserve Hurricane Hunter Aircraft
indicate that Marco is producing a small area of
tropical-storm-force winds over water to the northeast of the
center. These winds will likely subside during the next few hours as
Marco moves along the coast of Louisiana. Heavy rain will continue
along portions of the north-central Gulf Coast through tonight.

The estimated minimum pressure at the time of landfall was 1006 mb
(29.71 inches).

[AnnularCane]

Poor Marco. Maybe landfall will put a quicker end to his misery.

[Steve]

Poor Marco. Maybe landfall will put a quicker end to his misery.

Haha. Always good to see you Annular. I’m proud to say I’m sitting through my second band. It wasn’t going to take much for me to get my moneys worth at this point. Tropical rains, not super heavy or anything. Winds gusted to about 20 so you could hear people’s wind chimes and leaves rustling in the trees but no whistling. Hopefully as the center passes to our south it will bring us more until I go to bed tonight.

Oh ****. I didn’t see the blue flash but I just heard a transformer pop in the distance. No tropical porch sitting is complete without one.

9:10 edit. Got some sideways bands coming across soon. Time for a refill and a shot of caffeine. https://www.weather.gov/lix/

[wx98]

Depression just offshore west of the mouth of the Mississippi:

10:00 PM CDT Mon Aug 24
Location: 29.0°N 89.8°W
Moving: W at 9 mph
Min pressure: 1007 mb
Max sustained: 35 mph

[Steve]

Just did a shot of coffee. I got to work tomorrow so I’m going to try to watch models nap get up middle of the night and sleep after that. Meanwhile we have some special marine warnings to our east. So I guess I’m going to get a taste of what might have been.
https://www.weather.gov/lix/

[wx98]

Poor little Marco met a dismal end.

Post-Tropical Cyclone Marco Advisory Number 21
NWS National Hurricane Center Miami FL AL142020
400 AM CDT Tue Aug 25 2020

...MARCO BECOMES A REMNANT LOW JUST SOUTH OF LOUISIANA...
...THIS IS THE LAST ADVISORY...


SUMMARY OF 400 AM CDT...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...28.8N 91.2W
ABOUT 60 MI...100 KM S OF MORGAN CITY LOUISIANA
ABOUT 110 MI...175 KM SSE OF LAFAYETTE LOUISIANA
MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHES

[Steve]

Poor little Marco met a dismal end.

Post-Tropical Cyclone Marco Advisory Number 21
NWS National Hurricane Center Miami FL AL142020
400 AM CDT Tue Aug 25 2020

...MARCO BECOMES A REMNANT LOW JUST SOUTH OF LOUISIANA...
...THIS IS THE LAST ADVISORY...


SUMMARY OF 400 AM CDT...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...28.8N 91.2W
ABOUT 60 MI...100 KM S OF MORGAN CITY LOUISIANA
ABOUT 110 MI...175 KM SSE OF LAFAYETTE LOUISIANA
MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHES

He was a fun storm to track. The naked swirl is moving as forecast toward SWLA. I still want to see if the low pressure center can survive until Laura gets there and see what happens. He was in the no man's land between the shear zone coming up from the SW and the high pressure bulging in from the E. You can see that setup clearly on IR this morning. There is some ongoing flooding in MS.
https://www.tropicaltidbits.com/sat/sat ... product=ir

[EquusStorm]

Marco may be dead but his tropical moisture chunk and disconnected mid-level remnants are bringing an overcast, rainy day to the central Gulf states; really low LCLs and extremely humid.

[longhorn2004]

So will the rain on the NE side follow Marco to Texas? Central Texas in particular.

[Steve]

Probably not much of it. It's windy today here in New Orleans. SE wins in the teens with gusts into the 20's and 30's down in Boothville and at the Airport.

[wx98]

I just checked the progress of the swirl on IR and it is currently westbound south of Pecan Island. It’s been firing intermittent small convection blobs which immediately get blown off the the northeast at high speed. You can actually see the LLC on Lake Charles Radar now and rain across SW LA is broadly rotating around the center. Pretty neat

[Blinhart]

Getting some descent down pours from him.

[tarheelprogrammer]

It is quite funny to see Laura producing all this convection. Then we will take a peak at Marco's naked dying swirl, seeing it spurt convection only to have it quickly be trimmed off. I mean it is quickly getting its hair cut.

[wx98]

The remnant swirl just came in south of Freeport, Texas. Confirmed by infrared and radar. It skirted around to the northwest of Laura all day.